Search results for "Fazel"
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I Am the Wounded Victim of a Suicide Bomber
I Am the Wounded Victim of a Suicide Bomber presents a selection of poems, translated into English and including the Perisan texts, by Fazel Ahad Ahadi, a scholar and poet driven from his home in Afghanistan by the political and social disruptions that have beset his country since the mid-twentieth century. Drawing heavily on these years of warfare and domination by outsiders and by extremists, this collection highlights the struggles of Afghans to keep alive their individual and collective identities along with the loneliness and cultural dislocation of exile—conditions experienced by too many the world over. While Ahadi’s poems can be joyful and hopeful, most evoke the pain of separation and isolation mixed with the determination to endure, persist, and resist.
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Way Things Were
Memoir and History
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Multi-Carrier Spread-Spectrum
l 1 Khaled Fazel , Gerhard P. Fettweis lGerman Aerospace Research Establishment (DLR) Institute for Communications Technology 0-82234 Oberpfaffenhofen, Germany lDresden University of Technology Department of Electrical Engineering 0-01062 Dresden, Germany To operate future generation multimedia communications systems high data rate transmission needs to be guaranteed with a high quality of service. For instance, the third generation cellular mobile systems should offer a high data rate up to 2 Mbitls for video, audio, speech and data transmission [1]. In addition, the important challenge for these cellular systems will be the choice of an appropriate multiple access scheme. These trends motivated many researchers to look for multiple access systems that offer high spectral efficiency. The technique of spread spectrum originating from the military applications may allow partly to fulfill the above requirements. Advantages of spread spectrum technique are broadly known: High immunity against multipath distortion, no need for frequency planning, high flexibility, easier variable rate transmission etc. [1-2]. A multiple access scheme based on direct sequence spread spectrum, known as direct sequence code division multiple access (DS-CDMA) relies on spreading the data stream using an assigned spreading code for each user in the time domain. The capability of minimising multiple access interference (MAl) is given by the cross correlation properties of spreading codes. In the case of multipath propagation the capability of distinguishing one component from others in the composite received signal is offered by the auto-correlation properties of the spreading codes [2].
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Multi-Carrier Spread-Spectrum
The benefits and success of multi-carrier (MC) modulation on one side and the flexibility offered by the spread spectrum (SS) technique on the other side have motivated many researchers to investigate the combination of both techniques since 1993. This combination known as multi-carrier spread spectrum (MC-SS) benefits from the advantages of both systems and offers high flexibility, high spectral efficiency, simple detection strategies, narrow-band interference rejection capability, etc. The basic principle of this combination is straightforward: The spreading is performed as direct sequence spread spectrum (DS-SS) but instead of transmitting the chips over a single carrier, several sub-carriers are employed. The MC modulation and demodulation can easily be realized in the digital domain by performing IFFT and FFT operations. The separation of the users' signals can be performed in the code domain. MC-SS systems can perform the spreading in frequency direction, which allows for simple signal detection strategies. Since 1993, MC-SS has been deeply studied and new alternative solutions have been proposed. Meanwhile, deep system analysis and comparison with DS-CDMA have been performed that show the superiority of MC-CDMA.
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Multi-Carrier Spread Spectrum & Related Topics
Khaled Fazel Stefan Kaiser Digital Microwave Systems German Aerospace Center (DLR) Bosch Telecom GmbH Institute for Communications Technology D-71522 Backnang, Germany D-82234 Wessling, Germany In this last decade of this millennium the technique of multi-carrier transmission for wireless broadband multimedia applications has been receiving wide interests. Its first great success was in 1990 as it was selected in the European Digital Audio Broadcasting (DAB) standard. Its further prominent successes were in 1995 and 1998 as it was selected as modulation scheme in the European Digital Video Broadcasting (DVB-T) and in three broadband wireless indoor standards, namely ETSI-Hiperlan-II, American IEEE-802. 11 and Japanese MMAC, respectively. The benefits and success of multi-carrier (MC) modulation in one side and the flexibility offered by spread spectrum (SS) technique in other hand motivated many researchers to investigate the combination of both techniques, known as multi-carrier spread-spectrum (MC-SS). This combination benefits from the main advantages of both systems and offers high flexibility, high spectral efficiency, simple detection strategies, narrow band interference rejection capability, etc. . The basic principle of this combination is straightforward: The spreading is performed as direct SS (DS-SS) but instead of transmitting the chips over a single sequence carrier, several sub-carriers could be employed. As depicted in Figure 1, after spreading with assigned user specific code of processing gain G the frequency mapping and multi-carrier modulation is applied. In the receiver side after multi-carrier demodulation and frequency de-mapping, the corresponding detection algorithm will be performed.
R 6,014.95
Multi-Carrier Spread-Spectrum
Khaled Fazel Stefan Kaiser Radio System Design DoCoMo Euro-Labs Marconi Communications Landsberger Strasse 312 D-71522 Backnang, Germany D-80687 Munich, Germany The field of multi-carrier and spread spectrum communications has became an important research topic with increasing number of research activities [1]. Especially in the last two years, beside deep system analysis of various multiple access schemes, new standardization activities in the framework of beyond 3G (B3G) concepts have been initiated. Multi-carrier transmission is considered to be a potential candidate to fulfil the requirements of the next generation system. The two important requirements of B3G/4G can be summarized as: i) much higher data rate for cellular mobile radio and ii) a unique physical layer specification for indoor/hot spot and outdoor/cellular applications, including fixed wireless access (FWA) schemes. The activities within the 3GPP and WiMAX fora are examples of such trends (see Fig. 1). IEEE 802 ETSI WAN UMTS, EDGE 3GPP (GSM) HiperMAN & IEEE 802. 16 WiMAX MAN HiperAccess WirelessMAN HiperLAN/2 IEEE 802. 11 LAN WiFi RLAN WirelessLAN IEEE 802.15 PAN Bluetooth BRAN Figure 1 Beyond 3G: Worldwide Standardization Activities xii Editorial Introduction The WiMAX (Worldwide Interoperability for Microwave Access [2]) vision is to provide broadband wireless access with its primary goal to promote IEEE 802. 16a-e and ETSI-BRAN standards through interoperability testing and certification. In the first step the broadband access to the so-called last mile applications with fixed positioned terminals is envisaged.
R 5,790.99
Akzeptanz von Elektromobilität
In der Automobilindustrie werden der Elektromobilität große Chancen zugeschrieben, mittelfristig eine ökonomisch umsetzbare Alternative zu Verbrennungsmotoren darzustellen. Ludwig Fazel untersuchtin seiner Arbeit die Akzeptanzfaktoren von Elektromobilität im Rahmen eines ganzheitlichen Modellansatzes und ermöglicht ein umfassendes Verständnis für das technologiespezifische Adoptionsverhalten von Individuen. Neben der kontextspezifischen Anpassung des Technology Acceptance Models (TAM) findet im Rahmen der Modellentwicklung und -validierung der Vergleich zwischen der Nutzungsformdes Kaufs und der Nutzungsform des Carsharing statt, was eine inhaltliche und methodische Erweiterung des klassischen TAM darstellt. Darüber hinaus wird im Rahmen einer Wirtschaftlichkeitsrechnung die finanzielle Attraktivität desGeschäftsmodells E-Carsharing bewertet.
R 3,520.65
Multi-Carrier Spread-Spectrum
The benefits and success of multi-carrier (MC) modulation on one side and the flexibility offered by the spread spectrum (SS) technique on the other side have motivated many researchers to investigate the combination of both techniques since 1993. This combination known as multi-carrier spread spectrum (MC-SS) benefits from the advantages of both systems and offers high flexibility, high spectral efficiency, simple detection strategies, narrow-band interference rejection capability, etc. The basic principle of this combination is straightforward: The spreading is performed as direct sequence spread spectrum (DS-SS) but instead of transmitting the chips over a single carrier, several sub-carriers are employed. The MC modulation and demodulation can easily be realized in the digital domain by performing IFFT and FFT operations. The separation of the users' signals can be performed in the code domain. MC-SS systems can perform the spreading in frequency direction, which allows for simple signal detection strategies. Since 1993, MC-SS has been deeply studied and new alternative solutions have been proposed. Meanwhile, deep system analysis and comparison with DS-CDMA have been performed that show the superiority of MC-CDMA.
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Baha'is of Iran
The Baha’i community of Iran is the country’s largest non-Muslim religious minority. This collection of essays presents a comprehensive study of the social and historical development of the Baha’i community, and its role in shaping modern Iran.Central to this study is the pioneering character of the Baha’i community in the late 19th and early 20th century, with chapters examining the role of women in the Baha’i community; the impact of Baha’i-run schools on Iranian society, Baha’i contributions to public health initiatives; and the influence of Baha’i thought and the actions of individual Baha’is on the Constitutional Revolution of 1906-1911.Conversion to the Baha’i Faith is another important theme, as contributors investigate the phenomenon of large scale conversion to the Baha’i Faith from the Jewish and Zoroastrian communities. Finally, although persecution of the Baha’is has drawn the attention of the Western media, until now few scholars working in the field of Iranian studies have chosen to write on the history or details of this persecution. Here, five prominent figures in the field redress this balance and look at different aspects of this persecution, including its historical background, the attitude of secular Iranians, persecution before and after the Islamic Revolution of 1979, and human rights perspectives. This book will be of interest to students and scholars of Iranian studies, Middle Eastern studies and comparative religion, and with many chapters authored by leading academics in Iranian studies, The Baha’is of Iran addresses both a gap in academic literature on the Baha’i Faith, and in the study of modern Iran in general.
R 3,354.00
Multi-Carrier Spread-Spectrum
Khaled Fazel Stefan Kaiser Radio System Design DoCoMo Euro-Labs Marconi Communications Landsberger Strasse 312 D-71522 Backnang, Germany D-80687 Munich, Germany The field of multi-carrier and spread spectrum communications has became an important research topic with increasing number of research activities [1]. Especially in the last two years, beside deep system analysis of various multiple access schemes, new standardization activities in the framework of beyond 3G (B3G) concepts have been initiated. Multi-carrier transmission is considered to be a potential candidate to fulfil the requirements of the next generation system. The two important requirements of B3G/4G can be summarized as: i) much higher data rate for cellular mobile radio and ii) a unique physical layer specification for indoor/hot spot and outdoor/cellular applications, including fixed wireless access (FWA) schemes. The activities within the 3GPP and WiMAX fora are examples of such trends (see Fig. 1). IEEE 802 ETSI WAN UMTS, EDGE 3GPP (GSM) HiperMAN & IEEE 802. 16 WiMAX MAN HiperAccess WirelessMAN HiperLAN/2 IEEE 802. 11 LAN WiFi RLAN WirelessLAN IEEE 802.15 PAN Bluetooth BRAN Figure 1 Beyond 3G: Worldwide Standardization Activities xii Editorial Introduction The WiMAX (Worldwide Interoperability for Microwave Access [2]) vision is to provide broadband wireless access with its primary goal to promote IEEE 802. 16a-e and ETSI-BRAN standards through interoperability testing and certification. In the first step the broadband access to the so-called last mile applications with fixed positioned terminals is envisaged.
R 6,382.57
Baha'is of Iran
The Baha’i community of Iran is the country’s largest non-Muslim religious minority. This collection of essays presents a comprehensive study of the social and historical development of the Baha’i community, and its role in shaping modern Iran.Central to this study is the pioneering character of the Baha’i community in the late 19th and early 20th century, with chapters examining the role of women in the Baha’i community; the impact of Baha’i-run schools on Iranian society, Baha’i contributions to public health initiatives; and the influence of Baha’i thought and the actions of individual Baha’is on the Constitutional Revolution of 1906-1911.Conversion to the Baha’i Faith is another important theme, as contributors investigate the phenomenon of large scale conversion to the Baha’i Faith from the Jewish and Zoroastrian communities. Finally, although persecution of the Baha’is has drawn the attention of the Western media, until now few scholars working in the field of Iranian studies have chosen to write on the history or details of this persecution. Here, five prominent figures in the field redress this balance and look at different aspects of this persecution, including its historical background, the attitude of secular Iranians, persecution before and after the Islamic Revolution of 1979, and human rights perspectives. This book will be of interest to students and scholars of Iranian studies, Middle Eastern studies and comparative religion, and with many chapters authored by leading academics in Iranian studies, The Baha’is of Iran addresses both a gap in academic literature on the Baha’i Faith, and in the study of modern Iran in general.
R 9,319.38
Multi-Carrier Spread Spectrum & Related Topics
Khaled Fazel Stefan Kaiser Digital Microwave Systems German Aerospace Center (DLR) Bosch Telecom GmbH Institute for Communications Technology D-71522 Backnang, Germany D-82234 Wessling, Germany In this last decade of this millennium the technique of multi-carrier transmission for wireless broadband multimedia applications has been receiving wide interests. Its first great success was in 1990 as it was selected in the European Digital Audio Broadcasting (DAB) standard. Its further prominent successes were in 1995 and 1998 as it was selected as modulation scheme in the European Digital Video Broadcasting (DVB-T) and in three broadband wireless indoor standards, namely ETSI-Hiperlan-II, American IEEE-802. 11 and Japanese MMAC, respectively. The benefits and success of multi-carrier (MC) modulation in one side and the flexibility offered by spread spectrum (SS) technique in other hand motivated many researchers to investigate the combination of both techniques, known as multi-carrier spread-spectrum (MC-SS). This combination benefits from the main advantages of both systems and offers high flexibility, high spectral efficiency, simple detection strategies, narrow band interference rejection capability, etc. . The basic principle of this combination is straightforward: The spreading is performed as direct SS (DS-SS) but instead of transmitting the chips over a single sequence carrier, several sub-carriers could be employed. As depicted in Figure 1, after spreading with assigned user specific code of processing gain G the frequency mapping and multi-carrier modulation is applied. In the receiver side after multi-carrier demodulation and frequency de-mapping, the corresponding detection algorithm will be performed.
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Multi-Carrier Spread-Spectrum & Related Topics
Multi-Carrier Spread-Spectrum has been deeply studied and new alternative solutions have been proposed. This book edits the newest contributions and research results in this new field presented at the Third International Workshop on MC-SS & Related Topics, held in Oberpfaffenhofen, Germany.
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